﻿#region License, Terms and Author(s)
//
// BugTraqPie - IBugTraqProvider for (Iron)Python
// Copyright (c) 2009 Atif Aziz. All rights reserved.
//
//  Author(s):
//
//      Atif Aziz, http://www.raboof.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion

namespace BugTraqPie
{
    #region Imports

    using System.Collections.Generic;
    using System.IO;

    #endregion

    static class PiePath
    {
        public static IEnumerable<string> GetPathThenAncestory(string path)
        {
            while (path != null)
            {
                yield return path;
                path = Path.GetDirectoryName(path);
            }
        }

        public static string FindFile(string fileName, IEnumerable<string> paths)
        {
            foreach (var path in paths)
            {
                var testPath = Path.Combine(path, fileName);
                if (File.Exists(testPath))
                    return testPath;
            }
            return null;
        }
    }
}
